Oiling mechanism for machine-tools.



H. W. OSTER.

OILING MECHANISM FOR MACHINE TOOLS.

APPLICATION FILED FEB. 6. I9I5.

Patented Nov. 9, 1915.

Ewen 01 W 0411 UNITED STATES PATENT OFFICE.

HERMAN W. OSTER, 0F CLEVELAND, OHIO, ASSIGNOR TO THE OSTER MANUFACTURING COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

Specification of Letters Patent.

Patented Nov. 9, 1915.

Application filed February 6, 1915. Serial No. 6,442. i

To all whom it may concern: 7

Be it known that I, IIERMAN W. OSTER, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Oiling Mechanism for Machine-Tools, of which the following is a full, clear, and exact description.

The problem of discharging oil onto that part of a cylindrical piece of work, which is being cut by tools projecting inward from a rotary annular tool-carrying head, has not heretofore been satisfactorily solved.

The object of the present invention is to solve that problem; and the invention consists in the construction and combination of parts shown in the drawings and hereinafter described, and pointed out definitely in the appended claims.

The invention is applicable to various kinds of machine tools having rotatable annular heads which have their cutting tools projecting inward from their inner peripheries. To illustrate the invention, however, the drawings show a so-called geared die stock.

Figure 1 is a front elevation of said die stock; Fig. 2 is a longitudinal vertical section through the rotary head and the support therefor; Fig. 8 is a sectional end view in the plane of the line 33 on Fig. 2.

Referring to the parts by reference characters, 10 represents an annular rotatable head, carrying inwardly projecting threadcutting dies or chasers 12, which are adjustable radially by means of a cam plate 13 mounted on said head. It also carries centering guide bars 1 1 which are radially movable by means of another cam plate 15. The construction and combination of the parts referred to are well known, and therefore need no further description.

17 represents the head-supporting body member, which is fixed to the bed plate 19 of the machine. This body member is provided with three concentric flanges 19, 20 and 21, arranged one within the other. bevel gear 28 is rotatably mounted on the intermediate cylindrical flange 20, and is held against longitudinal movement by means of a ring 24:, which is made fast by screws or other suitable means, to the end of the flange 19. The rotatable head 10 is rigidly fixed to this gear by means of screws 29 and thereby the gear becomes in effect a part of the rotatable head. A. driving shaft 25 is mounted adjacent to the head, and projects into the same, and carriesabeveled pinion 26 which engages with the gear 23, whereby said gear and head may be turned.

Between the flanges 20 and 21 is an annular space 30 which serves as an oil chamber, to which oil may be continuously fed through a pipe 31, which may be connected to any oil feeding device, as, foreXample, an oil pump 32 of familiar form. The annular oil chamber 30 has its open end closed by the inner part of the gear 23, which substantially contacts with the inner ends of the flanges 20 and 21, as clearly shown in Fig. 2. In this gear and in the head to which it is connected, are a plurality of oil ducts 85, which at their intake ends are in open communication with the oil chamber, as shown in Fig. 2. Their discharge ends 35 are through the inner periphery of the annular head. Preferably there are as many of these oil ducts as there are dies 12, and they are located between the dies; and the inner discharge ends of said ducts are so, directed that the oil discharge from them will strike the cylindrical work W which is being cut by the dies at or very near to the point at which the dies are cutting.

When the machine is in operation, and oil is being fed to the oil chamber 30 by the pump, or any other suitable means, the oil will flow in a stream from each of these oil ducts directly onto the cylindrical piece of shown in the drawings, the work W is firmly gripped by a vise 37 mounted on a sliding carriage 38, which is moved endwise as required, carrying the work with it while the tools are cutting said work.

Having thus described my invention, what I claim is 1. In, a machine tool, the combination of a head-supporting body member having two concentric flanges disposed one within the other thereby leaving an annular chamber between them, an annular head rotatably mounted on the larger of said two flanges and having a portion extending inward in substantial contact with ends of both, flanges, the said head containing an oil duct which at one end communicates V with said annular chamber and at the discharge end extends through the inner peripheral wall of said head.

2. In a machine tool, the combination of a head-supporting body having two concentric flanges disposed one within the other leaving an annular chamber between them, an annular head rotatably mounted in position such that a part which is rigid with said head engages the ends of both flanges and therefore closes said annular chamber, said head containing an oil duct which at one end communicates with said oil chamber and at its discharge end extends through the inner peripheral wall of said head.

In a machine tool, the combination of a head-supporting body member having three concentric flanges arranged one within another, a (hiring gear rotatably mounted on the middle flange and extended inward in substantial contact with the end of said flange and with the end of the lnner flange,

a ring fixed to the outer of said three flanges tended through the inner peripheral wall of said head.

In testimony whereof, I hereunto affix my signature in the presence o two witnesses. HERMAN W. OSTER. \Vitnesses:

M. R. SPAYD, J. H. Human.

Copies of this Patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C." 

